sea

US /siː/
UK /siː/
"sea" picture
1.

mar

the expanse of salt water that covers most of the earth's surface and surrounds its landmasses

:
The ship sailed across the vast sea.
O navio navegou pelo vasto mar.
We spent our vacation by the sea.
Passamos nossas férias à beira-mar.
2.

mar, lago

a large area of fresh water; a lake

:
The Caspian Sea is actually the world's largest inland body of water.
O Mar Cáspio é, na verdade, o maior corpo de água interior do mundo.
They sailed their small boat on the Dead Sea.
Eles navegaram com seu pequeno barco no Mar Morto.
3.

mar, grande quantidade

a large amount or number of something

:
There was a sea of faces in the crowd.
Havia um mar de rostos na multidão.
He inherited a sea of troubles from his predecessor.
Ele herdou um mar de problemas de seu antecessor.